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Related Experiment Video

Updated: Jun 21, 2026

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

Published on: September 7, 2022

Retrieval analysis of failed constrained acetabular liners.

Steven N Shah1, Rachel J Kaye, Natalie H Kelly

  • 1Hip and Knee Service, Hospital for Special Surgery, New York, New York, USA.

The Journal of Arthroplasty
|July 7, 2009
PubMed
Summary
This summary is machine-generated.

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This study analyzed retrieved acetabular liners, finding outer rim impingement and wear were more common. Liner damage did not correlate with clinical or radiographic outcomes.

Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Mechanical engineering

Background:

  • Constrained acetabular liners in hip replacements face significant mechanical stress.
  • Understanding the mechanical performance and failure modes of these liners is crucial for improving patient outcomes.
  • Limited data exists on the specific damage mechanisms and their clinical relevance.

Purpose of the Study:

  • To analyze retrieved acetabular liners to identify wear and damage patterns.
  • To assess the relationship between damage types/severity and clinical, radiographic, and implant variables.
  • To elucidate the complex interplay between impingement, wear, and clinical performance.

Main Methods:

  • Analysis of retrieved acetabular liners.
  • Evaluation of wear and other damage modes.

Related Experiment Videos

Last Updated: Jun 21, 2026

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

Published on: September 7, 2022

  • Correlation analysis with clinical, radiographic, and implant data.

    • Main Results:

    • Outer rim impingement was more frequent and severe than inner rim impingement.
    • The 20-degree elevation was the most commonly affected area by impingement.
    • Higher outer bearing surface wear scores were observed compared to inner bearing scores.
    • Liners removed due to infection or stem failure showed similar damage patterns to other groups.
    • No significant association was found between liner damage and clinical or radiographic variables.

    Conclusions:

    • Acetabular liner damage, particularly outer rim impingement and wear, is a significant finding in retrieved implants.
    • The relationship between observed damage and clinical/radiographic outcomes is complex and not directly associated.
    • Further research is needed to fully understand the long-term implications of liner damage.